Hi my name is Johnny Quattro, I'm the inventor of the Jamn Multi-tool and the music wheel you see inside.

The app changed my life. It made my guitar playing reach a whole new level. I hope it does that for you too. Check it out and message me on Facebook if you need any help using it. Thanks!

The app has NO in-app purchases everything feature is available.

Who is this app for?It's a must have interactive reference tool for musicians with basic music theory knowledge.

The app is the perfect companion to visualize a song’s hidden structure and chord progressions. The Jamn wheel that confers the app its uniqueness, reveals the relationships between keys, chords and scales for guitar (electronic guitar and acoustic guitar), bass, ukulele and piano. Re-discover the circle of fifths with Jamn multi-tool.

This multi-award winning app is perfect if you want to:•Find chords that belong together to help write better songs•Explore different scales and keys•Get deeper into music theory•Personalize existing songs by adding more chords •Jam solo or with a band

“Whether you're learning to play the guitar, or writing your own songs, Jamn looks like an essential download. It uses a wheel-based user interface to show the relationships between keys, chords and scales....”Stuart Dredge, The Guardian

BLOGGERS:

“What Jamn is, is a fantastic way to trigger the creative part of your brain. I know a lot of songwriters who could find uses for an app like this, just so they’re able to get their creative juices flowing.”Nathan Snelgrove, Appstorm

“This app is totally worth it.”J Hamilton, SonicBoomBap

MUSICIANS:

“If you wanna play any key, expand your knowledge of chords and scales and everything, you should definitely check out Jamn app.”Mishka, internationally-known reggae artist